CN110869199A - Method for weight-based control of the internal pressure of a support body subjected to a weight load or payload - Google Patents
Method for weight-based control of the internal pressure of a support body subjected to a weight load or payload Download PDFInfo
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- CN110869199A CN110869199A CN201880046807.5A CN201880046807A CN110869199A CN 110869199 A CN110869199 A CN 110869199A CN 201880046807 A CN201880046807 A CN 201880046807A CN 110869199 A CN110869199 A CN 110869199A
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- 238000000034 method Methods 0.000 title claims abstract description 41
- 230000008859 change Effects 0.000 claims abstract description 11
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- 238000010586 diagram Methods 0.000 claims abstract description 6
- 230000009471 action Effects 0.000 claims abstract description 4
- 230000009467 reduction Effects 0.000 claims abstract description 4
- 230000008439 repair process Effects 0.000 claims description 15
- 230000006870 function Effects 0.000 claims description 9
- 230000005484 gravity Effects 0.000 claims description 7
- 230000008569 process Effects 0.000 claims description 6
- 239000000565 sealant Substances 0.000 claims description 5
- 238000011156 evaluation Methods 0.000 claims description 3
- 239000000725 suspension Substances 0.000 claims description 3
- 230000007246 mechanism Effects 0.000 claims description 2
- 238000012806 monitoring device Methods 0.000 claims description 2
- 238000007789 sealing Methods 0.000 claims description 2
- 238000005259 measurement Methods 0.000 description 5
- 238000013461 design Methods 0.000 description 2
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- 238000009530 blood pressure measurement Methods 0.000 description 1
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- 230000001419 dependent effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 235000003642 hunger Nutrition 0.000 description 1
- 239000004816 latex Substances 0.000 description 1
- 229920000126 latex Polymers 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C73/00—Repairing of articles made from plastics or substances in a plastic state, e.g. of articles shaped or produced by using techniques covered by this subclass or subclass B29D
- B29C73/16—Auto-repairing or self-sealing arrangements or agents
- B29C73/166—Devices or methods for introducing sealing compositions into articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
- B60C23/10—Arrangement of tyre-inflating pumps mounted on vehicles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
- B60S5/00—Servicing, maintaining, repairing, or refitting of vehicles
- B60S5/04—Supplying air for tyre inflation
- B60S5/043—Supplying air for tyre inflation characterised by the inflation control means or the drive of the air pressure system
- B60S5/046—Supplying air for tyre inflation characterised by the inflation control means or the drive of the air pressure system using electrical or electronical means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
- F04B35/04—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
- F04B35/06—Mobile combinations
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B37/00—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00
- F04B37/10—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/06—Control using electricity
- F04B49/065—Control using electricity and making use of computers
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G19/00—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups
- G01G19/08—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for incorporation in vehicles
- G01G19/10—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for incorporation in vehicles having fluid weight-sensitive devices
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L17/00—Devices or apparatus for measuring tyre pressure or the pressure in other inflated bodies
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B2203/00—Motor parameters
- F04B2203/02—Motor parameters of rotating electric motors
- F04B2203/0201—Current
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B2203/00—Motor parameters
- F04B2203/02—Motor parameters of rotating electric motors
- F04B2203/0202—Voltage
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B2207/00—External parameters
Abstract
Method for the weight-based control of the internal pressure of a support body subjected to a weight or payload load, wherein the internal pressure is generated by means of an electric motor-driven compressor and the mass m present and under the action of the gravitational acceleration g is determinedLoad(s)Acts on the weight load or payload of the support body in that a reduction and subsequent increase of the internal pressure takes place, wherein the increase of the internal pressure causes the position of the point of application of the weight load or payload to change by a difference Δ Z, wherein: measuring the motor current I of the drive motor of the compressor at a constant motor voltage U during the increase of the internal pressure by means of the compressorLoad(s)And integrating it over the time of the pressure increase and thus determining the electrical work W necessary for the position changeLoad(s)Wherein the electric power W is appliedLoad(s)A characteristic value W according to a characteristic diagram related to the electric power0Making a comparison according to WLoad(s)And W0The difference between Δ W and the mass mLoad(s)Determining the position variation amount Δ Z, the mass difference amount Δ m, and the payload difference amount Δ FZAnd from this the mass m actually present is determined as a resultLoad(s)And a weight load or payload.
Description
Technical Field
The invention relates to a method for weight-based control of the internal pressure of a support body subjected to a weight load or a payload load, wherein the internal pressure is generated by means of an electric motor-driven compressor. The invention also relates to a device for carrying out the method according to the invention when controlling the internal pressure of a motor vehicle tyre, and to the use of the method.
Background
A common support body subjected to weight loads or payload loads is, for example, a pneumatic tire of a motor vehicle. In order to safely operate such motor vehicle tires, it is absolutely necessary that the pressure in the tire must be kept within relatively narrowly predefined limits, so that the wear and temperature load of the tire is reduced and the tire meets its requirements, for example with regard to load-bearing capacity, rolling resistance and lateral guidance.
Setting the correct air pressure is important in particular when the tire is to be inflated again after the tire has failed and has been repaired outside the workshop, that is to say, for example, in the case of a tire failure which usually has to be brought to a usable state only temporarily.
Today, many passenger vehicles are no longer used to actually carry a spare tire that is inflated to a set point pressure and mounted on a rim and then can be mounted to replace a defective wheel. More and more vehicles carry failure kits that occupy much less storage space and are also lighter than spare tires. Such tire repair kits typically include a compressor, a sealant (typically a latex emulsion mixture) that is coagulated in the tire, respective connection hoses and required cable connections for energy supply, as well as switches, pressure gauges and further operator control elements. A complete repair kit is thus provided which can be used continuously and with which it is possible to continuously inspect other repair materials, such as hoses, various tool keys, car jacks, etc., without carrying a spare tire mounted on the rim.
In addition to the primary repair function, the air compressor of such a tire repair kit may also be used to check air pressure and to change tire pressure. This additional function is in many cases used even more frequently than the actual tire repair function.
The tire pressure is set here only manually using a pressure gauge, which is usually located on the compressor. The user must obtain the respective nominal pressure from the vehicle manual for fitting and loading, and automatically inflate the tires in such a way that the set point pressure is reached. In such a context, the user is only approximately or not at all aware of the additional load of the vehicle, i.e. the weight load or payload to which the tire is loaded as a support. Thus, when setting tire pressure, particularly when there is a high additional load, the user typically sets a tire pressure that is not optimal.
Of course, other supports may also create similar problems, wherein not only the repair process needs to be considered. Such conditions may also occur, for example, in vehicles with a suspension system, in which the vertical position or position on the road surface necessary for safe driving will be set again after a high load by means of a ride height control system, which can be activated by the driver alone.
DE 102015214006 a1 discloses a method for measuring the pressure generated by an electric motor-driven compressor, in which the change in the average motor current of the electric motor driving the compressor (which change depends on the change in the pressure at the output of the compressor) is determined and made available or implemented as a pressure proportional variable for operating the compressor in the form of an input variable of a control device. While such methods allow the pressure to be determined without additional sensors or additional pressure gauges, it is disadvantageous to be able to detect the required pressure from the additional load/load.
Disclosure of Invention
It is therefore an object of the present invention to provide a method for closed-loop control of the internal pressure of a support body subjected to a weight load or a payload load, which method does not have the disadvantages described and provides a means of closed-loop control for occasional users as well as for automatic methods which can react in a reliable manner to the load actually present on the support body and which method allows the internal pressure to be set accordingly.
This object is achieved by the features of the main claim. Further advantageous developments are disclosed in the dependent claims.
In this context, the mass m at the acceleration of gravity g present is determinedLoad(s)Is that the internal pressure decreases and then increases.
As the internal pressure increases, the position of the point of application of the weight load or payload changes by the position difference amount Δ Z.
Against this background, the following further method steps are carried out:
-during the period in which the internal pressure is increased by the compressorMeasuring the motor current I of the drive motor of the compressor at a constant motor voltage ULoad(s)And integrating it over the time of the pressure increase, wherein the electrical work W necessary for the position changeLoad(s)Is determined as the product of the motor voltage and the integrated motor current,
-applying the electrical power WLoad(s)A characteristic value W according to a characteristic diagram related to the electric power0The comparison is made, in the characteristic diagram, according to the normal mass m under the action of the gravitational acceleration g0The normal load acting in the form of (1) and the further parameters of the support body store the values of the electrical function for achieving the normal or standard position of the application point under normal load,
according to WLoad(s)And W0The amount of difference Δ W between determines the amount of change Δ Z of the position, the amount of difference Δ m of the masses and the amount of difference Δ F of the payload by means of the following relationZ
ΔW＝ΔFZ·ΔZ
And
mload(s)-m0＝Δm
And
ΔFZ＝g·Δm
and, in turn, determining from the mass the weight load or payload present after the pressure increase
In view of the acceleration of gravity g,
after this, according to the weight load or payload determined in this way, the compressor is switched off when an internal pressure predefined for the determined weight load or payload on the basis of the parameters of the support body is reached.
By reducing and again increasing the internal pressure of the support body in a manner that the internal pressure is controlled according to the invention and determining the associated loading effect on the basis of the integral of the motor current, the weight load or payload can be determined automatically in combination with further method steps. With a known payload, the optimum internal pressure can be automatically set based on a predefined characteristic value/characteristic curve.
In the case of the application of the method in a support body, for example in the form of a motor vehicle tire, such a tire can then be inflated in an automated manner in a manner adapted to the actually existing wheel load, without the user having to carry out a continuous check using a pressure gauge or using a table.
The manner in which the method functions according to the invention can also be explained very simply by way of example of the use of the method according to the invention in a motor vehicle tyre. In order to increase the tire pressure, an electrically driven air compressor provided for this purpose actually needs to do a certain amount of electric work. This work depends mainly on the amount of air transferred, the pressure in the tire, and the compression efficiency of the air compressor.
However, since the pressure has increased, the center of gravity of the wheel has risen vertically, there is a measurable dependence on the load on the tire, i.e. the wheel load. By using the previously determined reference characteristic curve of an unloaded (or normally loaded) tyre, it is possible to determine the additional work done on the basis of the gravitational movement and thus calculate the wheel load.
Of course, such load measurements required to control pressure may be applied to any type of pressure controlled actuator. The method constitutes a significant simplification for the end user and significantly improves the accuracy of the setting of the internal pressure/tire pressure, exactly as in the case of the process of checking the tire pressure and adapting the tire pressure.
An advantageous development consists in that the electric motor-driven compressor is controlled by means of an electronic Motor Control Unit (MCU), the motor voltage and the motor current being obtained and processed in such a way that the product of the motor voltage and the integrated motor current is determined and compared with the values of a characteristic map stored in an electronic memory of the motor control unit, wherein an electronic motor driver device (MD ═ motor driver) for the drive motor of the compressor is actuated as a function of the weight load or payload also determined by the motor control unit and after comparison with the values of a characteristic map of an internal pressure predefined for the respective weight load or payload stored in another electronic memory of the motor control unit. In this way, the method according to the invention can be very easily integrated in the control unit and can be assisted by a tight combination of hardware and software.
Another advantageous embodiment is that the electric motor-driven compressor is provided with a pressure sensor which detects the internal pressure of the support body and transmits a signal proportional to the internal pressure to the electronic Motor Control Unit (MCU) and/or the electronic motor driver device (MD). Such pressure sensors then cause an inherent check or feedback and a closed loop control in the overall method.
It is, of course, also possible to make a corresponding pressure-sensitive evaluation of the motor characteristic variables by means of the fact that the pressure is determined in the manner disclosed in DE 102015214006 a1, which consists in particular in determining the change in the average motor current of the electric motor driving the compressor, which change depends on the change in pressure at the compressor output, and providing it as a pressure proportional variable in the form of an input variable to the control device for operating the compressor. Since the method according to the invention always requires a motor current or an integral of the motor current, such a use constitutes a particularly simple possible implementation. In this respect reference is made to DE 102015214006 a1 in its entirety.
A further advantageous embodiment consists in that at least the determined weight load or payload and the determined internal pressure in the support body are transmitted as signals to further control or monitoring devices of the surrounding system. In the case of the application of the method to a motor vehicle tire, it is helpful in this respect to transmit the determined variables to a central motor controller which then emits possible signals to the driver, for example within the functional scope of the tire pressure checking system, via, for example, a display or signaling device.
The method can be implemented particularly advantageously in a device implemented as a tire repair kit for inflating a motor vehicle tire. In this context, the device has an electric motor-driven compressor, preferably a reciprocating piston compressor driven by an electric motor via a slider-crank mechanism, and has the object of inflating the motor vehicle tire, wherein of course a reduction of the internal pressure due to the tire failure state has been predefined and the internal pressure increases due to the inflation of the motor vehicle tire, during which the position of the axle as the point of application of the wheel load changes by an amplitude Δ Z. The compressor driven by the electric motor is then controlled by means of an electronic Motor Control Unit (MCU) and an electronic motor driver device (MD, motor driver for short), and during the inflation process, the compressor is switched off as a function of the determined weight load or payload when an internal pressure of the motor vehicle tire predefined for the determined weight load or payload is reached.
In such a device, the handling is greatly simplified for the user when checking the tire pressure, in particular when adapting the tire pressure to the actual load. Further, the accuracy of the set tire pressure is improved. Overall, the user-friendliness of the device is increased in a manner that results in greater acceptance.
It is also largely the case that the device is embodied as a tire repair kit for sealing and inflating a motor vehicle tire, wherein a valve and dispenser unit connected to a container with sealant is provided for sealant and pressurized gas, and wherein there are connecting means, such as hoses, between the valve and dispenser unit and the inflatable object, and if appropriate connecting means for an energy supply device, a switching device and/or a control and display device for operating the device. Thus, the tire is sealed and inflated for recovery during one operation. In particular in "emergency situations", for example, in which there is a pressing need to complete work quickly on the road and alongside the traffic stream, it is often necessary to forget to set the air pressure laboriously and adapt it to the load situation.
Of course, the method according to the invention can also be used advantageously in many other situations and fields of use, for example for controlling the internal pressure in a support body which is embodied as an air spring bellows of a pneumatic suspension system of a vehicle. As already stated above, such a control process may be performed manually or automatically. In both cases, the method according to the invention is advantageous because further sensor systems and measuring devices can be dispensed with.
Drawings
The method according to the invention will be explained in more detail below on the basis of exemplary embodiments, in particular on the basis of a tire repair kit for a motor vehicle tire. In the drawings:
FIG. 1 shows a basic view of the design of an air compressor unit for a device which is embodied as a tire repair kit and has the object of carrying out the method according to the invention, and
fig. 2 shows a schematic representation of the inflation process of a vehicle tire.
Detailed Description
Fig. 1 shows a basic view of the design of an air compressor unit 1 for a device which is embodied as a tire repair kit and has the object of carrying out the method according to the invention, namely an "electronic" assisted tire repair kit. The control unit 2(MCU) controls the connected air compressor 4 according to the user's requirements via a user interface 5(UI) by means of a motor driver 3 (MD).
Thus, the term air compressor unit herein denotes an assembly of a tire repair kit comprising a control unit, a motor driver, an air compressor (like a piston compressor), a motor and transmission and a user interface.
During operation, the control unit (MCU) obtains all relevant system parameters, such as temperature, motor voltage, motor current or back pressure. In this context, as described above, the pressure measurement can be carried out by means of an electronic pressure sensor or by means of an evaluation of the data of the average motor current.
Fig. 2 is a schematic diagram of a process of inflating a vehicle tire 6 with air. From state A (gas starvation or internal pressure too low) to stateB (predetermined air pressure), the air pressure in the tire 6 is controlled from the pressure P by the air compressor 4Start ofIncrease to pressure PEnd up. Here, the center of gravity of the tire is raised by the amplitude difference Δ Z. The air compressor 4 is operated with a motor voltage U and an instantaneous current ILoad(s)Electric work WLoad(s)。
The work performed is loaded from the normal state with a mass m0The pressure-increased portion W of the tire0And the portion Δ W of the center of gravity shift of the tire additionally loaded with mass
mLoad(s)＝m0+Δm。
WLoad(s)＝W0+ΔW
Part W0Have been determined in advance for the respective system configuration (vehicle type, tire size, tire position, operating voltage, operating temperature, starting pressure and ending pressure) in calibration measurements and stored as a table of values or a characteristic map in a control unit (MCU). By measuring the instantaneous motor current iioad and integrating it, work W can be measured in a control unit (MCU)Load(s)And thus the portion of the center of gravity shift is calculated.
ΔW＝U[∫ILoad(s)(t)dt-W0]
Using the relation Δ W ═ Δ FZΔ Z, from which the weight force Δ F acting in addition to the normal load can be calculatedZG · Δ m, and thus the wheel load m can also be calculatedLoad(s)。
To estimate measurement accuracy, the average motor current
And
finally, this is also taken into account here.
Wherein
The following formula is obtained
For typical parameters U-12V, Δ t-300 s, and Δ Z-5 cm, an accuracy factor of 7.3kg/mA is obtained. The wheel load can therefore be determined with an accuracy of approximately 40kg, taking into account the measurement accuracy of the motor current measurement of 5 mA. This is entirely sufficient for setting the optimum tire pressure.
Description of the reference numerals
1 air compressor unit
2 control unit (MCU)
3 Motor Driver (MD)
4 air compressor
5 User Interface (UI)
6 vehicle tyre
Claims (8)
1. Method for weight-based control of the internal pressure of a support body subjected to a weight or payload load, wherein the internal pressure is generated by means of an electric motor-driven compressor, characterized in that it is determined that a mass m exists and is under the action of gravitational acceleration gLoad(s)In that a reduction and subsequent increase of the internal pressure takes place, wherein the increase of the internal pressure causes a change in the position of the point of application of the weight load or payload by a difference Δ Z, wherein the following further method steps are carried out:
-pressure inside the chamberMeasuring the motor current I of the drive motor of the compressor at a constant motor voltage U during the boost phase of the compressorLoad(s)And integrating it over the time of the pressure increase, wherein the electrical work W necessary for the position changeLoad(s)Is determined as the product of the motor voltage and the integrated motor current,
-applying the electrical power WLoad(s)A characteristic value W according to a characteristic diagram related to the electric power0The comparison is made, in the characteristic diagram, according to the normal mass m under the action of the gravitational acceleration g0The normal load acting in the form of (1) and the further parameters of the support body store the values of the electrical function for achieving the normal or standard position of the application point under normal load,
according to WLoad(s)And W0The amount of difference Δ W between determines the amount of change Δ Z of the position, the amount of difference Δ m of the masses and the amount of difference Δ F of the payload by means of the following relationZ
ΔW＝ΔFZ·ΔZ
And
mload(s)-m0＝Δm
And
ΔFZ＝g·Δm
and, in turn, determining from the mass the weight load or payload present after the pressure increase
In view of the acceleration of gravity g,
after that, according to the weight load or payload determined in this way, the compressor is switched off when an internal pressure predefined for the determined weight load or payload on the basis of the parameters of the support body is reached.
2. The method as claimed in claim 1, wherein the electric motor-driven compressor (4) is controlled by means of an electronic motor control unit (2), the motor voltage and motor current being obtained and processed in that the product of the motor voltage and the integrated motor current is determined and compared with the values of a characteristic map stored in an electronic memory of the motor control unit, wherein an electronic motor driver device (3) for the drive motor of the compressor is actuated depending on the weight load or payload also determined by the motor control unit (2) and after comparison with the values of a characteristic map of an internal pressure predefined for the respective weight load or payload stored in another electronic memory of the motor control unit (2).
3. The method of claim 1 or 2, wherein the electric motor-driven compressor is provided with a pressure sensor detecting the internal pressure of the support body, or by a corresponding pressure-sensitive evaluation of a motor characteristic variable, as a result of which a signal proportional to the internal pressure is transmitted to the electronic motor control unit (2) and/or the electronic motor driver device (3).
4. The method of one of claims 1 to 3, wherein at least the determined weight load or payload and the determined internal pressure in the support body are transmitted as signals to further control or monitoring devices of a surrounding system.
5. A device for carrying out the method of closed-loop and open-loop control of the internal pressure of a support body embodied as a motor vehicle tire as claimed in one of claims 1 to 4, wherein the device has an electric motor-driven compressor, preferably a reciprocating piston compressor driven by an electric motor via a slider-crank mechanism, and has the object of inflating the motor vehicle tire to an internal pressure, wherein a reduction of the internal pressure due to the tire fault state is predefined and the internal pressure is increased due to the inflation of the motor vehicle tire, during which the position of the axle, which is the point of application of the wheel load, changes by an amplitude Δ Z, wherein the electric motor-driven compressor is controlled by means of an electronic motor control unit (2) and an electronic motor driver apparatus (3), and during the inflation process, the compressor is switched off as a function of the determined weight load or payload when an internal pressure of the motor vehicle tire (6) predefined for the determined weight load or payload is reached.
6. The device of claim 5, wherein at least the determined weight load or payload and the determined internal pressure in the motor vehicle tire are transmitted as signals to a central motor controller of the vehicle.
7. The device as claimed in claim 5 or 6, which is embodied as a tire repair kit for sealing and inflating motor vehicle tires, wherein a valve and dispenser unit connected to a container with sealant is provided for sealant and pressurized gas, and wherein there are connecting means, such as hoses, between the valve and dispenser unit and the inflatable object, and if appropriate connecting means for energy supply devices, switching devices and/or control and display devices for operating the device.
8. Use of the method according to one of claims 1 to 4 for controlling the internal pressure in a support body which is embodied as an air spring below a vehicle pneumatic suspension system.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102017212040.1 | 2017-07-13 | ||
| DE102017212040.1A DE102017212040A1 (en) | 2017-07-13 | 2017-07-13 | Method for weight-dependent control of the internal pressure of a loaded by a weight or load carrying body |
| PCT/EP2018/060697 WO2019011496A1 (en) | 2017-07-13 | 2018-04-26 | Method for the weight-dependent control of the internal pressure of a support body loaded by a weight load or support load |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110869199A true CN110869199A (en) | 2020-03-06 |
| CN110869199B CN110869199B (en) | 2021-10-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201880046807.5A Active CN110869199B (en) | 2017-07-13 | 2018-04-26 | Method for weight-based control of the internal pressure of a support body subjected to a weight load or payload |
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|---|---|
| US (1) | US11919263B2 (en) |
| CN (1) | CN110869199B (en) |
| DE (1) | DE102017212040A1 (en) |
| WO (1) | WO2019011496A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112208493B (en) * | 2019-07-12 | 2023-05-12 | 明门(中国)幼童用品有限公司 | Automatic inflation system |
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| US6907630B2 (en) * | 2003-10-10 | 2005-06-21 | Midmark Corporation | Load compensation system for power chair |
| RO126135A2 (en) * | 2009-09-28 | 2011-03-30 | Filip Cojocaru | Energy regeneration process and pneumatic drive system for ascending and descending cyclic movements |
| DE102015214006A1 (en) | 2015-07-24 | 2017-01-26 | Continental Reifen Deutschland Gmbh | Method for pressure measurement |
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- 2017-07-13 DE DE102017212040.1A patent/DE102017212040A1/en active Pending
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2018
- 2018-04-26 CN CN201880046807.5A patent/CN110869199B/en active Active
- 2018-04-26 US US16/630,482 patent/US11919263B2/en active Active
- 2018-04-26 WO PCT/EP2018/060697 patent/WO2019011496A1/en active Application Filing
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| WO2003023550A2 (en) * | 2001-09-11 | 2003-03-20 | Zonar Compliance Systems, Llc | System and process to ensure performance of mandated safety and maintenance inspections |
| CN102673532A (en) * | 2011-03-14 | 2012-09-19 | 胎意科汽车配件(上海)有限公司 | Sealant container unit with improved valves for repairing and inflating inflatable article |
| CN103917853A (en) * | 2011-08-22 | 2014-07-09 | 威尔莱特有限公司 | Vehicle tyre pressure checking |
| CN103802795A (en) * | 2012-11-08 | 2014-05-21 | 贾芳兰 | Air inflation and tire repair integration machine |
| CN105392988A (en) * | 2013-07-23 | 2016-03-09 | 大陆轮胎德国有限公司 | Compressor with pressure limiting |
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| CN106163777A (en) * | 2014-03-19 | 2016-11-23 | 大陆轮胎德国有限公司 | For device inflatable articles being sealed and inflating |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102017212040A1 (en) | 2019-01-17 |
| US20210086459A1 (en) | 2021-03-25 |
| CN110869199B (en) | 2021-10-19 |
| WO2019011496A1 (en) | 2019-01-17 |
| US11919263B2 (en) | 2024-03-05 |
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